Tomography Scanners, X-Ray ComputedTomography, X-Ray ComputedPositron-Emission TomographyTomographyTomography, Optical CoherenceTomography, Emission-ComputedPhantoms, ImagingTomography, Spiral ComputedMultidetector Computed TomographyTomography, OpticalCone-Beam Computed TomographyMagnetic Resonance ImagingRadiographyImaging, Three-DimensionalGamma RaysImage Processing, Computer-AssistedTomography, Emission-Computed, Single-PhotonReproducibility of ResultsSensitivity and SpecificityRadiation DosageElectron Microscope TomographyEquipment DesignFluorodeoxyglucose F18Tomography, X-RayEquipment Failure AnalysisImage EnhancementRadiographic Image Interpretation, Computer-AssistedElectron Probe MicroanalysisArtifactsRadiometryGermaniumPneumoconiosisElasmobranchiiRadiographic Image EnhancementBrainSkates (Fish)AlgorithmsContrast MediaWhole Body ImagingFluorine RadioisotopesObserver VariationImage Interpretation, Computer-AssistedLutetiumFast NeutronsTime FactorsRadiology Department, HospitalProspective StudiesPredictive Value of TestsUltrasonographyX-Ray MicrotomographyRetrospective StudiesDiagnostic ImagingTeleradiologySubtraction TechniqueTransducersWrist JointFeasibility StudiesSilicatesRadiation EffectsUltraviolet RaysGamma CamerasSpectrometry, X-Ray EmissionFour-Dimensional Computed TomographyDose-Response Relationship, RadiationLungMetacarpophalangeal JointAluminum SilicatesAnimal FinsMetacarpus